This Bear Creek Arsenal AR-15 5.56 NATO Complete rifle has a 16″ M4 barrel with a parkerized finish, and features a 1:8 twist, with a carbine length gas system. This 5.56 NATO AR-15 also includes a 15″ MLOK rail, a forged upper receiver, a BCA AR15 Bolt Carrier Group, Flash Hider, rear charging handl
